From Wikipedia, the free encyclopedia
Nuclides with atomic number of 51 but with different mass numbers
Antimony
(
51
Sb) occurs in two
stable
isotopes
,
121
Sb and
123
Sb. There are 35 artificial
radioactive isotopes
, the longest-lived of which are
125
Sb, with a
half-life
of 2.75856 years;
124
Sb, with a half-life of 60.2 days; and
126
Sb, with a half-life of 12.35 days. All other isotopes have half-lives less than 4 days, most less than an hour.
There are also many
isomers
, the longest-lived of which is
120m1
Sb with a half-life of 5.76 days.
With the exception of
beryllium
, antimony is the lightest element observed to have isotopes capable of undergoing
alpha decay
, with the isotope
104
Sb being seen to undergo this mode of decay. Some lighter elements, namely those in the vicinity of
8
Be
, have isotopes with delayed alpha emission (following
proton
or
beta emission
) as a rare branch.
List of isotopes
[
edit
]
Nuclide
[n 1]
|
Z
|
N
|
Isotopic mass
(
Da
)
[n 2]
[n 3]
|
Half-life
|
Decay
mode
[n 4]
|
Daughter
isotope
[n 5]
[n 6]
|
Spin
and
parity
[n 7]
[n 8]
|
Natural abundance
(mole fraction)
|
Excitation energy
[n 8]
|
Normal proportion
|
Range of variation
|
103
Sb
|
51
|
52
|
102.93969(32)#
|
100# ms [>1.5 μs]
|
β
+
|
103
Sn
|
5/2+#
|
|
|
104
Sb
|
51
|
53
|
103.93647(39)#
|
0.47(13) s
[0.44(+15?11) s]
|
β
+
(86%)
|
104
Sn
|
|
|
|
p
(7%)
|
103
Sn
|
β
+
, p (7%)
|
103
In
|
α
(<1%)
|
100
In
|
105
Sb
|
51
|
54
|
104.93149(11)
|
1.12(16) s
|
β
+
(99%)
|
105
Sn
|
(5/2+)
|
|
|
p (1%)
|
104
Sn
|
β
+
, p (<1%)
|
104
In
|
106
Sb
|
51
|
55
|
105.92879(34)#
|
0.6(2) s
|
β
+
|
106
Sn
|
(4+)
|
|
|
106m
Sb
|
1000(500)# keV
|
220(20) ns
|
|
|
|
|
|
107
Sb
|
51
|
56
|
106.92415(32)#
|
4.0(2) s
|
β
+
|
107
Sn
|
5/2+#
|
|
|
108
Sb
|
51
|
57
|
107.92216(22)#
|
7.4(3) s
|
β
+
|
108
Sn
|
(4+)
|
|
|
β
+
, p (rare)
|
107
In
|
109
Sb
|
51
|
58
|
108.918132(20)
|
17.3(5) s
|
β
+
|
109
Sn
|
5/2+#
|
|
|
110
Sb
|
51
|
59
|
109.91675(22)#
|
23.0(4) s
|
β
+
|
110
Sn
|
(4+)
|
|
|
111
Sb
|
51
|
60
|
110.91316(3)
|
75(1) s
|
β
+
|
111
Sn
|
(5/2+)
|
|
|
112
Sb
|
51
|
61
|
111.912398(19)
|
51.4(10) s
|
β
+
|
112
Sn
|
3+
|
|
|
113
Sb
|
51
|
62
|
112.909372(19)
|
6.67(7) min
|
β
+
|
113
Sn
|
5/2+
|
|
|
114
Sb
|
51
|
63
|
113.90927(3)
|
3.49(3) min
|
β
+
|
114
Sn
|
(3+)
|
|
|
114m
Sb
|
495.5(7) keV
|
219(12) μs
|
|
|
(8?)
|
|
|
115
Sb
|
51
|
64
|
114.906598(17)
|
32.1(3) min
|
β
+
|
115
Sn
|
5/2+
|
|
|
116
Sb
|
51
|
65
|
115.906794(6)
|
15.8(8) min
|
β
+
|
116
Sn
|
3+
|
|
|
116m1
Sb
|
93.99(5) keV
|
194(4) ns
|
|
|
1+
|
|
|
116m2
Sb
|
380(40) keV
|
60.3(6) min
|
β
+
|
116
Sn
|
8?
|
|
|
117
Sb
|
51
|
66
|
116.904836(10)
|
2.80(1) h
|
β
+
|
117
Sn
|
5/2+
|
|
|
118
Sb
|
51
|
67
|
117.905529(4)
|
3.6(1) min
|
β
+
|
118
Sn
|
1+
|
|
|
118m1
Sb
|
50.814(21) keV
|
20.6(6) μs
|
|
|
(3)+
|
|
|
118m2
Sb
|
250(6) keV
|
5.00(2) h
|
β
+
|
118
Sn
|
8?
|
|
|
119
Sb
|
51
|
68
|
118.903942(9)
|
38.19(22) h
|
EC
|
119
Sn
|
5/2+
|
|
|
119m1
Sb
|
2553.6(3) keV
|
130(3) ns
|
|
|
(19/2?)
|
|
|
119m2
Sb
|
2852(7) keV
|
850(90) ms
|
IT
|
119
Sb
|
27/2+#
|
|
|
120
Sb
|
51
|
69
|
119.905072(8)
|
15.89(4) min
|
β
+
|
120
Sn
|
1+
|
|
|
120m1
Sb
|
0(100)# keV
|
5.76(2) d
|
β
+
|
120
Sn
|
8?
|
|
|
120m2
Sb
|
78.16(5) keV
|
246(2) ns
|
|
|
(3+)
|
|
|
120m3
Sb
|
2328.3(6) keV
|
400(8) ns
|
|
|
(6)
|
|
|
121
Sb
[n 9]
|
51
|
70
|
120.9038157(24)
|
Stable
|
5/2+
|
0.5721(5)
|
|
122
Sb
|
51
|
71
|
121.9051737(24)
|
2.7238(2) d
|
β
?
(97.59%)
|
122
Te
|
2?
|
|
|
β
+
(2.41%)
|
122
Sn
|
122m1
Sb
|
61.4131(5) keV
|
1.86(8) μs
|
|
|
3+
|
|
|
122m2
Sb
|
137.4726(8) keV
|
0.53(3) ms
|
|
|
(5)+
|
|
|
122m3
Sb
|
163.5591(17) keV
|
4.191(3) min
|
IT
|
122
Sb
|
(8)?
|
|
|
123
Sb
[n 9]
|
51
|
72
|
122.9042140(22)
|
Stable
|
7/2+
|
0.4279(5)
|
|
124
Sb
|
51
|
73
|
123.9059357(22)
|
60.20(3) d
|
β
?
|
124
Te
|
3?
|
|
|
124m1
Sb
|
10.8627(8) keV
|
93(5) s
|
IT (75%)
|
124
Sb
|
5+
|
|
|
β
?
(25%)
|
124
Te
|
124m2
Sb
|
36.8440(14) keV
|
20.2(2) min
|
|
|
(8)?
|
|
|
124m3
Sb
|
40.8038(7) keV
|
3.2(3) μs
|
|
|
(3+, 4+)
|
|
|
125
Sb
|
51
|
74
|
124.9052538(28)
|
2.75856(25) y
|
β
?
|
125m
Te
|
7/2+
|
|
|
126
Sb
|
51
|
75
|
125.90725(3)
|
12.35(6) d
|
β
?
|
126
Te
|
(8?)
|
|
|
126m1
Sb
|
17.7(3) keV
|
19.15(8) min
|
β
?
(86%)
|
126
Te
|
(5+)
|
|
|
IT (14%)
|
126
Sb
|
126m2
Sb
|
40.4(3) keV
|
~11 s
|
IT
|
126m1
Sb
|
(3?)
|
|
|
126m3
Sb
|
104.6(3) keV
|
553(5) ns
|
|
|
(3+)
|
|
|
127
Sb
|
51
|
76
|
126.906924(6)
|
3.85(5) d
|
β
?
|
127m
Te
|
7/2+
|
|
|
128
Sb
|
51
|
77
|
127.909169(27)
|
9.01(4) h
|
β
?
|
128
Te
|
8?
|
|
|
128m
Sb
|
10(7) keV
|
10.4(2) min
|
β
?
(96.4%)
|
128
Te
|
5+
|
|
|
IT (3.6%)
|
128
Sb
|
129
Sb
|
51
|
78
|
128.909148(23)
|
4.40(1) h
|
β
?
|
129m
Te
|
7/2+
|
|
|
129m1
Sb
|
1851.05(10) keV
|
17.7(1) min
|
β
?
(85%)
|
129
Te
|
(19/2?)
|
|
|
IT (15%)
|
129
Sb
|
129m2
Sb
|
1860.90(10) keV
|
>2 μs
|
|
|
(15/2?)
|
|
|
129m3
Sb
|
2138.9(5) keV
|
1.1(1) μs
|
|
|
(23/2+)
|
|
|
130
Sb
|
51
|
79
|
129.911656(18)
|
39.5(8) min
|
β
?
|
130
Te
|
(8?)#
|
|
|
130m
Sb
|
4.80(20) keV
|
6.3(2) min
|
β
?
|
130
Te
|
(4, 5)+
|
|
|
131
Sb
|
51
|
80
|
130.911982(22)
|
23.03(4) min
|
β
?
|
131m
Te
|
(7/2+)
|
|
|
132
Sb
|
51
|
81
|
131.914467(15)
|
2.79(5) min
|
β
?
|
132
Te
|
(4+)
|
|
|
132m1
Sb
|
200(30) keV
|
4.15(5) min
|
β
?
|
132
Te
|
(8?)
|
|
|
132m2
Sb
|
254.5(3) keV
|
102(4) ns
|
|
|
(6?)
|
|
|
133
Sb
|
51
|
82
|
132.915252(27)
|
2.5(1) min
|
β
?
|
133m
Te
|
(7/2+)
|
|
|
134
Sb
|
51
|
83
|
133.92038(5)
|
0.78(6) s
|
β
?
|
134
Te
|
(0-)
|
|
|
134m
Sb
|
80(110) keV
|
10.07(5) s
|
β
?
(99.9%)
|
134
Te
|
(7?)
|
|
|
β
?
,
n
(.091%)
|
133
Te
|
135
Sb
|
51
|
84
|
134.92517(11)
|
1.68(2) s
|
β
?
(82.4%)
|
135
Te
|
(7/2+)
|
|
|
β
?
, n (17.6%)
|
134
Te
|
136
Sb
|
51
|
85
|
135.93035(32)#
|
0.923(14) s
|
β
?
(83%)
|
136
Te
|
1?#
|
|
|
β
?
, n (17%)
|
135
Te
|
136m
Sb
|
173(3) keV
|
570(50) ns
|
|
|
6?#
|
|
|
137
Sb
|
51
|
86
|
136.93531(43)#
|
450(50) ms
|
β
?
|
137
Te
|
7/2+#
|
|
|
β
?
, n
|
136
Te
|
138
Sb
|
51
|
87
|
137.94079(32)#
|
500# ms [>300 ns]
|
β
?
|
138
Te
|
2?#
|
|
|
β
?
, n
|
137
Te
|
139
Sb
|
51
|
88
|
138.94598(54)#
|
300# ms [>300 ns]
|
β
?
|
139
Te
|
7/2+#
|
|
|
This table header & footer:
|
- ^
m
Sb – Excited
nuclear isomer
.
- ^
( ) – Uncertainty (1
σ
) is given in concise form in parentheses after the corresponding last digits.
- ^
# – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
- ^
Modes of decay:
- ^
Bold italics symbol
as daughter – Daughter product is nearly stable.
- ^
Bold symbol
as daughter – Daughter product is stable.
- ^
( ) spin value – Indicates spin with weak assignment arguments.
- ^
a
b
# – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
- ^
a
b
Fission product
See also
[
edit
]
References
[
edit
]
- ^
Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021).
"The NUBASE2020 evaluation of nuclear properties"
(PDF)
.
Chinese Physics C
.
45
(3): 030001.
doi
:
10.1088/1674-1137/abddae
.
- ^
"Standard Atomic Weights: Antimony"
.
CIAAW
. 1993.
- ^
Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Bohlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Groning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04).
"Standard atomic weights of the elements 2021 (IUPAC Technical Report)"
.
Pure and Applied Chemistry
.
doi
:
10.1515/pac-2019-0603
.
ISSN
1365-3075
.
- Isotope masses from:
- Isotopic compositions and standard atomic masses from:
- "News & Notices: Standard Atomic Weights Revised"
.
International Union of Pure and Applied Chemistry
. 19 October 2005.
- Half-life, spin, and isomer data selected from the following sources.
- Audi, Georges; Bersillon, Olivier; Blachot, Jean;
Wapstra, Aaldert Hendrik
(2003),
"The N
UBASE
evaluation of nuclear and decay properties"
,
Nuclear Physics A
,
729
: 3?128,
Bibcode
:
2003NuPhA.729....3A
,
doi
:
10.1016/j.nuclphysa.2003.11.001
- National Nuclear Data Center
.
"NuDat 2.x database"
.
Brookhaven National Laboratory
.
- Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.).
CRC Handbook of Chemistry and Physics
(85th ed.).
Boca Raton, Florida
:
CRC Press
.
ISBN
978-0-8493-0485-9
.
|
---|
Group
|
1
|
2
|
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
Period
|
Hydrogen and
alkali metals
|
Alkaline
earth metals
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Pnictogens
|
Chalcogens
|
Halogens
|
Noble gases
|
①
|
1
|
|
2
|
②
|
3
|
4
|
|
5
|
6
|
7
|
8
|
9
|
10
|
③
|
11
|
12
|
|
13
|
14
|
15
|
16
|
17
|
18
|
④
|
19
|
20
|
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
33
|
34
|
35
|
36
|
⑤
|
37
|
38
|
|
39
|
40
|
41
|
42
|
43
|
44
|
45
|
46
|
47
|
48
|
49
|
50
|
51
|
52
|
53
|
54
|
⑥
|
55
|
56
|
|
71
|
72
|
73
|
74
|
75
|
76
|
77
|
78
|
79
|
80
|
81
|
82
|
83
|
84
|
85
|
86
|
⑦
|
87
|
88
|
|
103
|
104
|
105
|
106
|
107
|
108
|
109
|
110
|
111
|
112
|
113
|
114
|
115
|
116
|
117
|
118
|
⑧
|
119
|
120
|
|
|
|
|
|
57
|
58
|
59
|
60
|
61
|
62
|
63
|
64
|
65
|
66
|
67
|
68
|
69
|
70
|
|
|
|
89
|
90
|
91
|
92
|
93
|
94
|
95
|
96
|
97
|
98
|
99
|
100
|
101
|
102
|
|
|